Problems With Photoshop CS3 Brushes

[Ghyze]

I've read about this type of brush in Photoshop(it has a sharp shape), but I didn't find any kind of this one when I searching for it in Photoshop. Does anybody know how to find this kind of brush?

[Hoogle]

All I see are the basic load up brushes when using your your brush tool in the top left of the screen you will have the brush shape preview icon where you can choose what brush you want.

THe top right of that preview window you will see a tiny black arrow if you click that and then select reset brushes you to will have the same brushes as in the picture